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首页> 外文会议>IEEE MTT-S International Microwave Symposium >A UHF rectifier with one octave bandwidth based on a non-uniform transmission line
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A UHF rectifier with one octave bandwidth based on a non-uniform transmission line

机译：基于不均匀传输线的具有一个倍频程带宽的UHF整流器

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摘要

Ambient RF energy especially in urban settings is suitable for scavenging and harvesting scenarios provided one is able to collect signals from a large number of frequency bands and consequently spanning a large aggregate bandwidth. In this work a broadband rectifier is designed capable of harvesting RF energy in the 400 MHz - 1 GHz range, which includes the analog and digital TV bands and the UHF ISM 900 MHz band. In order to obtain a sufficiently large rectifier bandwidth, a matching network based on a non-uniform transmission line is considered. A charge pump rectifier is used and the number of diodes in the circuit is optimized in order to facilitate impedance matching based on the Bode-Fano limit. A prototype is fabricated and characterized. The rectifier has a measured efficiency above 5% from 470 MHz to 990 MHz at -20 dBm input power, which increases above 60% at 10 dBm input power over a band from 470 MHz to 860 MHz.
机译：环境RF能量（尤其是在城市环境中）适合于清理和收集场景，前提是它能够从大量频带中收集信号并因此跨越较大的集合带宽。在这项工作中，设计了一种宽带整流器，该整流器能够采集400 MHz-1 GHz范围内的RF能量，其中包括模拟和数字电视频段以及UHF ISM 900 MHz频段。为了获得足够大的整流器带宽，考虑了基于不均匀传输线的匹配网络。使用了电荷泵整流器，并且优化了电路中二极管的数量，以便于根据Bode-Fano极限进行阻抗匹配。原型被制造和表征。在-20 dBm输入功率下，整流器在470 MHz至990 MHz处测得的效率高于5％，而在470 MHz至860 MHz的频带上，在10 dBm输入功率下，整流器可提高60％以上的效率。

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